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Table 3

Spectral indices for spectral type determination.

Index Value SpT Index Ref.
Optical

PC3 2.78 L1.5 ± 0.5 M99
PC6 21.9 M8–L4 M99

Infrared

H2O(a) 1.35 L4 ± 0.5 A07
H2OD(a) 0.99 L0.25 ± 0.75 ML03
H2O-1(a) 0.59 L3.25 ± 1.00 S04
H2O-2(a) 0.82 L1.25 ± 0.50 S04

Notes. (a) Results obtained using the Allers & Liu (2013) polynomial fits.

References. A07 – Allers et al. (2007), M99 – Martín et al. (1999), ML03 – McLean et al. (2003), S04 – Slesnick et al. (2004).

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